SF cafeteria ban proposal dismissed (but only narrrowly)

It's initiatives like this that make me really discouraged about distributed government among equal (read "no") responsibility city supervisors and a largely symbolic mayor.

These supervisors are basically posing for the camera and headlines, and never put forward solutions that do anything but tinker around the edges or placate their own district for a few months. Of course I'm specifically thinking about housing. But also in this case, how ridiculous is it to propose that thousands of workers have to go use local restaurants by banning alternatives? What kind of public policy professionals are these?

What can be done about this kind of Bay Area government idiocy?